1 /* 2 * System Trace Module (STM) userspace interfaces 3 * Copyright (c) 2014, Intel Corporation. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * STM class implements generic infrastructure for System Trace Module devices 15 * as defined in MIPI STPv2 specification. 16 */ 17 18 #ifndef _UAPI_LINUX_STM_H 19 #define _UAPI_LINUX_STM_H 20 21 #include <linux/types.h> 22 23 /** 24 * struct stp_policy_id - identification for the STP policy 25 * @size: size of the structure including real id[] length 26 * @master: assigned master 27 * @channel: first assigned channel 28 * @width: number of requested channels 29 * @id: identification string 30 * 31 * User must calculate the total size of the structure and put it into 32 * @size field, fill out the @id and desired @width. In return, kernel 33 * fills out @master, @channel and @width. 34 */ 35 struct stp_policy_id { 36 __u32 size; 37 __u16 master; 38 __u16 channel; 39 __u16 width; 40 /* padding */ 41 __u16 __reserved_0; 42 __u32 __reserved_1; 43 char id[0]; 44 }; 45 46 #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id) 47 #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id) 48 #define STP_SET_OPTIONS _IOW('%', 2, __u64) 49 50 #endif /* _UAPI_LINUX_STM_H */ 51